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Does Earth have a second moon?
Mars has two moons, Jupiter has 67, Saturn 62, Uranus 27, Neptune 14. But our planet Earth has just one moon. Doesn't it?
July 22, 2014
Transiting exoplanet with longest year yet
Most distant planets known so far orbit close to their stars and thus have a short "year." Kepler-421b has a year about twice as long as Earth's.
July 21, 2014
Is our universe a bubble?
The multiverse hypothesis - the idea that there are other universes - can be tested, scientists say.
July 18, 2014
Mars Curiosity rover now crossing dangerous terrain
The car-sized rover is currently crossing a stretch of hard, rocky ground like that which previously dented and punctured its aluminum wheels.
July 17, 2014
Three next-generation dark matter experiments get a green light
Next generation, in this case, is defined as experiments that will be at least 10 times as sensitive as the current crop of dark matter detectors.
July 16, 2014
NASA re-enacted Apollo 11 launch on 45th anniversary today
What if we'd had Twitter on July 16, 1969, the day Apollo 11 launched carrying the first humans to the moon? NASA did a live-tweet reenactment today as if we had.
July 16, 2014
Geologic map of planet Mars
USGS released this cool geologic map of Mars this week, which was prepared for NASA. What to see first? Notice impact craters, in yellow.
July 16, 2014
Astronaut’s Vine of auroras from space
Auroras are awesome to see from here on Earth. Check out the view from space! Vine posted by ISS astronaut Reid Wiseman.
July 16, 2014
Draco the Dragon on July evenings
Two of the brightest stars here are Eltanin and Rastaban. Dragon's eyes! Rrrrr! And Thuban is just ... well, awesome.
July 16, 2014
Rosetta spacecraft’s comet has a double nucleus!
More complex shape for 67P/Churyumov-Gerasimenko restricts potential sites for November 11 landing. "Wow, wow, wow! I can't wait to get closer!"
July 15, 2014
